What Engine For the America GS?
#16
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Where is the Poll on this thread? He-he.
I am sure whatever path you choose there will be new wonderful developments that will send shock waves through the Rennlist community.
My vote would be a N/A @4.0 and 9.500 rev limit!
Keep up the good work Robert!
Daniel
I am sure whatever path you choose there will be new wonderful developments that will send shock waves through the Rennlist community.
My vote would be a N/A @4.0 and 9.500 rev limit!
Keep up the good work Robert!
Daniel
#17
RL Technical Advisor
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Given your quest for lightness, I would stick with a large displacement N/A engine like you originally planned. The turbo components add about 100lbs to the car in the wrong location. Having had both, I much prefer a non turbo car for real world driving and I'd wonder how well the Tip trans would do with a turbo engine. Just my $.02.
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#20
Drifting
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Knowing Robert, it's likely to be what hasn't been done before, and that's the attraction for me, so I would go with some hybrid 2 stage turbo setup to keep the lag to a minimum, I'd also like to see the unique 911 sound maintained.....as others have said the turbo's tend to lose that uniqueness...That way you have responsiveness, the sound track of choice and still keep that one off appeal.
Kevin
Kevin
#21
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What's wrong with the existing engine??
Keep it NA.
Keep it NA.
#22
Burning Brakes
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hmm i hadn't considered the weight implication.
could always charge cool rather than intercooler...
I do admit having owned lots of turbos, i do prefer the simplicity of the NA.
Its a shame the weight is an issue - else something along the lines of the Delta S4 would be good, supercharged and turbocharged
could always charge cool rather than intercooler...
I do admit having owned lots of turbos, i do prefer the simplicity of the NA.
Its a shame the weight is an issue - else something along the lines of the Delta S4 would be good, supercharged and turbocharged
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#23
Nordschleife Master
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You can make a very responsive turbo engine, espeically with the correct gearing (which would need to be addressed for a 9500rpm engine too). They are a pain to maintain, I can't tell you how many times I've cut my hands up trying to work on a turbo engine. Just try to adjust the valves on a turbo with power steering...in the car.
#24
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I couldn't agree more.
With the power of the current engine and all the special extras, the special box and 2000 pounds total weight why would you need it to be any faster. I think it is perfect as is and complicating it with a turbo would take away from it's beauty.
Although the Secan intercoolers are works of art by themselves I don't believe you would be able to continue to use the 3.8RS tail and definitely never be able to put back the factory lid. Besides now you would be back to gaining weight which is contrary to all the work you did so far.
With the power of the current engine and all the special extras, the special box and 2000 pounds total weight why would you need it to be any faster. I think it is perfect as is and complicating it with a turbo would take away from it's beauty.
Although the Secan intercoolers are works of art by themselves I don't believe you would be able to continue to use the 3.8RS tail and definitely never be able to put back the factory lid. Besides now you would be back to gaining weight which is contrary to all the work you did so far.
#25
Burning Brakes
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Bob -
Thought the 4.0 was a lock..? Did your "builder(s)" decide to go a different way than we discussed ?
I too love the kick of Turbo power, but the lag in my old 930 got tiresome over time. The twin turbos are much better, but add complexity and weight.
N/A gets my vote.
Rgds.
Thought the 4.0 was a lock..? Did your "builder(s)" decide to go a different way than we discussed ?
I too love the kick of Turbo power, but the lag in my old 930 got tiresome over time. The twin turbos are much better, but add complexity and weight.
N/A gets my vote.
Rgds.
#26
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I love people who go their own way and explore the unknown.
Go for it Robert, what ever you had in mind, I am sure I will be alone
watching this space to see what it will be!
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Daniel
Go for it Robert, what ever you had in mind, I am sure I will be alone
watching this space to see what it will be!
![popcorn](https://rennlist.com/forums/images/smilies/popcorn.gif)
Daniel
#28
Professor of Pending Projects
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Question is, what can be done that has not been done before to push the envelop on this engine?
If you go via the Twin Turbo (or single Turbo) route, can you make the housing of a different/lighter materia? Can these be made of some carbon composite/silicon carbide material? Do you still use metal for the internals. Basically, can you go that route without impacting or minimizing the weight increase?
If you go via the Twin Turbo (or single Turbo) route, can you make the housing of a different/lighter materia? Can these be made of some carbon composite/silicon carbide material? Do you still use metal for the internals. Basically, can you go that route without impacting or minimizing the weight increase?
#29
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Question is, what can be done that has not been done before to push the envelop on this engine?
If you go via the Twin Turbo (or single Turbo) route, can you make the housing of a different/lighter materia? Can these be made of some carbon composite/silicon carbide material? Do you still use metal for the internals. Basically, can you go that route without impacting or minimizing the weight increase?
If you go via the Twin Turbo (or single Turbo) route, can you make the housing of a different/lighter materia? Can these be made of some carbon composite/silicon carbide material? Do you still use metal for the internals. Basically, can you go that route without impacting or minimizing the weight increase?
Just my .02 worth.
#30
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Apples and oranges, thats 2 completely different set-ups, I would have figured after turning over every rock with this car, this would be something set in stone that we coudlnt change your mind about. If it were me, the 4.0 just simply bc, its different, like the car.